public static Expression functionDeclaration(Parser p, Expression left, Token t)
{
if (left is VariableReferenceExpression)
{
Expression arguments = roundBacketRouter(p, t);
if (arguments is VariableDeclarationExpression)
{
arguments = new TupleDeclarationExpression(new List <VariableDeclarationExpression>()
{
arguments as VariableDeclarationExpression
});
}
if (arguments is TupleDeclarationExpression)
{
p.skip(TokenType.Dash);
p.skip(TokenType.RightAngleBracket);
TypeName returnType = DashParslets.getTypeName(p);
Expression body = p.parseExpression(0);
if (body is BlockExpression)
{
return(new FunctionExpression((left as VariableReferenceExpression).name,
arguments as TupleDeclarationExpression,
returnType,
body as BlockExpression));
}
else
{
throw new Exception("Function has invalid body!");
}
}
else
{
if (!(arguments is TupleDefinitionExpression))
{
arguments = new TupleDefinitionExpression(new List <Expression>()
{
arguments
});
}
return(new FunctionCallExpression((left as VariableReferenceExpression).name, arguments as TupleDefinitionExpression));
}
}
else
{
throw new Exception("Function has invalid name!");
}
}
private static Expression objectInstantiation(Parser p, Token t)
{
TypeName type = DashParslets.getTypeName(p);
if (p.peek(TokenType.LeftRoundBracket))
{
Expression arguments = p.parseExpression(0);
if (arguments is TupleDefinitionExpression)
{
return(new ClassInstantiationExpression(type, arguments as TupleDefinitionExpression));
}
else
{
return(new ClassInstantiationExpression(type, new TupleDefinitionExpression(new List <Expression> {
arguments
})));
}
}
else
{
throw new Exception("Missing parameter list for class instantiation!");
}
}